207 citations · 618 across the 20 of their papers we have counts for
20 papers
Genetic optimization of Brillouin scattering gain in subwavelength-structured silicon membrane waveguides
Paula Nuño Ruano, Jianhao Zhang, Xavier Le Roux +6
On-chip Brillouin optomechanics has great potential for applications in communications, sensing, and quantum technologies. Tight confinement of near-infrared photons and gigahertz…
Broadband behavior of quadratic metalenses with a wide field of view
Yang Liu, Jianhao Zhang, Xavier Le Roux +5
Metalenses are attracting a large interest for the implementation of complex optical functionalities in planar and compact devices. However, chromatic and off-axis aberrations rema…
Generating 10-GHz phonons in nanostructured silicon membrane optomechanical cavity
Jianhao Zhang, Xavier Le Roux, Miguel Montesinos-Ballester +6
Flexible control of photons and phonons in silicon nanophotonic waveguides is a key feature for emerging applications in communications, sensing and quantum technologies. Strong ph…
An electro-optically tunable microring laser monolithically integrated on lithium niobate on insulator
Difeng Yin, Yuan Zhou, Zhaoxiang Liu +9
We demonstrate monolithic integration of an electro-optically (EO) tunable microring laser on lithium niobate on insulator (LNOI) platform. The device is fabricated by photolithogr…
On-chip integrated waveguide amplifiers on Erbium-doped thin film lithium niobate on insulator
Junxia Zhou, Youting Liang, Zhaoxiang Liu +11
We demonstrate on-chip light amplification with integrated optical waveguide fabricated on erbium-doped thin film lithium niobate on insulator (TFLNOI) using the photolithography a…
An on-chip tunable micro-disk laser fabricated on Er3+ doped lithium niobate on insulator (LNOI)
Zhe Wang, Zhiwei Fang, Zhaoxiang Liu +7
We demonstrate a C-band wavelength-tunable microlaser with an Er3+ doped high quality (~1.02x10^6) lithium niobate microdisk resonator. With a 976 nm continuous-wave pump laser, la…
Polygon Coherent Modes in aWeakly Perturbed Whispering Gallery Microresonator for Efficient Second Harmonic, Optomechanic and Frequency Comb Generations
Zhiwei Fang, Sanaul Haque, Farajollahi Saeed +8
We observe high optical quality factor (Q) polygonal and star coherent optical modes in a lithium niobate microdisk. In contrast to the previous polygon modes achieved by deformed…
High-index-contrast single-mode optical waveguides fabricated on lithium niobate by photolithography assisted chemo-mechanical etching (PLACE)
Jianhao Zhang, Rongbo Wu, Min Wang +7
We report fabrication of low loss single mode waveguides on lithium niobate on insulator (LNOI) cladded by a layer of SiO2. Our technique, termed photolithography assisted chemo-me…
Efficient Electro-optical Tuning of Optical Frequency Microcomb on a Monolithically Integrated High-Q Lithium Niobate Microdisk
Zhiwei Fang, Haipeng Luo, Jintian Lin +7
We demonstrate efficient tuning of a monolithically integrated lithium niobate microdisk (LN) optical frequency microcomb. Utilizing the high optical quality (Q) factor (i.e., Q~7.…
Trimming and ultra-wide bandwidth expansion of silicon frequency comb spectra with self-adaptive boundary waveguides
Jianhao Zhang, Vincent Pelgrin, Carlos Alonso-Ramos +3
Dispersion engineering is among the most important steps towards a promising optical frequency comb. We propose a new and general approach to trim frequency combs using a self-adap…
Fabrication of a multifunctional photonic integrated chip on lithium niobate on insulator using femtosecond laser assisted chemo-mechanical polish
Rongbo Wu, Jintian Lin, Min Wang +5
We report fabrication of a multifunctional photonic integrated chip on lithium niobate on insulate (LNOI), which is achieved by femtosecond laser assisted chemo-mechanical polish.…
High-precision measurement of a propagation loss of single-mode optical waveguides on lithium niobate on insulator
Jintian Lin, Junxia Zhou, Rongbo Wu +6
We demonstrate fabrication of single-mode optical waveguides on lithium niobate on insulator (LNOI) by optical patterning combined with chemo-mechanical polishing. The fabricated L…
Self-adaptive waveguide boundary for wideband multi-mode four-wave mixing
Jianhao Zhang, Carlos Alonso-Ramos, Laurent Vivien +2
We propose a new approach to provide wideband multi-mode four-wave mixing, independent of the intrinsic waveguide dispersion. We adopt concepts from quantum mechanics and sub-wavel…
Real-time Electrical Tuning of an Optical Spring on a Monolithically Integrated Ultrahigh Q Lithium Nibote Microresonator
Zhiwei Fang, Sanaul Haque, Jintian Lin +7
Cavity optomechanics, the study of the interplay between light and mechanical properties of matter, has triggered a wide range of groundbreaking researches from cavity quantum elec…
Low-loss Lithium Niobate on Insulator (LNOI) Waveguides of a 10 cm-length and a Sub-nanometer Surface Roughness
Rongbo Wu, Min Wang, Jian Xu +9
We develop a technique for realizing lithium niobate on insulator (LNOI) waveguides of a multi-centimeter-length with a propagation loss as low as 0.027 dB/cm. Our technique relies…
Highly-efficient second and third harmonic generation in a monocrystalline lithium niobate microresonator
Jintian Lin, Yao Ni, Zhenzhong Hao +10
Nonlinear optics in whispering-gallery-mode (WGM) microresonators have attracted much attention. Owing to strong confinement of the light in a small volume, a WGM microresonator ca…
Generating Fano Resonances in a single-waveguide nanobeam cavity for efficient electro-optical modulation
Jianhao Zhang, Xavier Le Roux, Elena Ruran-Valdeiglesias +5
We propose a method for generating Fano resonance in a standalone silicon nanobeam cavity which eliminates the inconvenience from the unexpected side-coupled bus waveguide and unlo…
Lithium niobate micro-disk resonators of quality factors above 10^7
Rongbo Wu, Jianhao Zhang, Ni Yao +5
We report on fabrication of crystalline lithium niobate microresonators with quality factors above 10^7 as measured around 770 nm wavelength. Our technique relies on femtosecond la…
Simultaneous generation of four-wave mixing and stimulated Raman scattering in coupled lithium niobate microdisks mediated by second harmonic generation
Min Wang, Ni Yao, Rongbo Wu +7
High quality lithium niobate thin film microresonators provide an ideal platform for on-chip nonlinear optics applications. However, the phase matching condition for efficient para…
Fabrication of high quality factor lithium niobate double-disk using a femtosecond laser
Zhiwei Fang, Ni Yao, Min Wang +7
We demonstrate fabrication of a high quality factor lithium niobate double-disk whispering-gallery microcavity using femtosecond laser assisted ion beam milling. Using this method,…